... SAW,TIG,MIG,MAG,etc for circular/longitudinal seam competitive price ISO9001,CE HUAFEI automatic steel pipe seam welding machine ... , welding slid seat support, lifting support and electronic control system.different welding modes, including MAG, MIG, TIG, plasma welding ... reliable and precise, make welding performance excellent. 4.Big size touch screen displayer makes setting and adjusting of welding ...